Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balances at Dec. 31, 2018	$ 30	$ 157,312	$ (106,339)	$ (2,916)	$ (29,004)	$ 19,083
Purchase of shares of treasury stock					(1,116)	(1,116)
Issuance of common shares for the exercise of stock options		633				633
Non-cash stock compensation expense		302				302
Dividends declared			(4,724)			(4,724)
Other comprehensive income, foreign currency translation adjustment				365		365
Net income			8,196			8,196
Issuance of restricted common shares, net of (forfeitures)
Balances at Mar. 31, 2019	30	158,247	(102,867)	(2,551)	(30,120)	22,739
Balances at Dec. 31, 2019	30	162,154	(93,357)	(2,209)	(33,726)	32,892
Purchase of shares of treasury stock					(4,425)	(4,425)
Issuance of common shares for the exercise of stock options		3,145				3,145
Non-cash stock compensation expense		332				332
Dividends declared			(5,278)			(5,278)
Other comprehensive income, foreign currency translation adjustment				(1,124)		(1,124)
Net income			11,755			11,755
Balances at Mar. 31, 2020	$ 30	$ 165,631	$ (86,880)	$ (3,333)	$ (38,151)	$ 37,297